Add complete multiplayer system with real-time gameplay, challenge system, and 50x50 board option

package.json

@@ -0,0 +1,29 @@
+{
+  "name": "connect5-multiplayer",
+  "version": "1.0.0",
+  "description": "Connect-5 multiplayer game server with real-time gameplay",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "nodemon server.js"
+  },
+  "keywords": [
+    "connect5",
+    "gomoku",
+    "multiplayer",
+    "socketio",
+    "game"
+  ],
+  "author": "Beyond Cloud Technology",
+  "license": "MIT",
+  "dependencies": {
+    "express": "^4.18.2",
+    "socket.io": "^4.6.1",
+    "mysql2": "^3.6.5",
+    "bad-words": "^3.0.4",
+    "cors": "^2.8.5"
+  },
+  "devDependencies": {
+    "nodemon": "^3.0.2"
+  }
+}